" Then, in the weakness of the infant's limbs, and not in its will, lies its innocency. I myself have seen and known an infant to be jealous though it could not speak. It became pale, and cast bitter looks on its foster-brother. "

― Augustine of Hippo , The Complete Works of Saint Augustine: The Confessions, On Grace and Free Will, The City of God, On Christian Doctrine, Expositions on the Book Of Psalms, ... (50 Books With Active Table of Contents)